Home / 39,051.09-53,890.22-21,145.68

Finding the Fourth Proportional to 39,051.09, 53,890.22 and 21,145.68

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Solution

The fourth proportional to 39,051.09, 53,890.22 and 21,145.68 is: 29,180.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,051.09 : 53,890.22 = 21,145.68 : x
  2. Step 2: Convert to fraction form
    39,051.09/53,890.22 = 21,145.68/x
  3. Step 3: Cross multiply
    39,051.09x = 53,890.22 × 21,145.68
  4. Step 4: Simplify right side
    39,051.09x = 1,139,545,400.11
  5. Step 5: Solve for x
    x = 1,139,545,400.11/39,051.09
  6. Step 6: Final answer
    x = 29,180.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.